1 Now the LORD said to Abram, “Go forth from your country, And from your relatives And from your father’s house, To the land which I will show you; 2 And I will make you a great nation, And I will bless you, And make your name great; And so you shall be a blessing; 3 And I will bless those who bless you, And the one who curses you I will curse. And in you all the families of the earth will be blessed.” Genesis 12:1–3 (NASB95)

1 And the Lord said to Abram, “Go out from your land and from your kinsfolk and from the house of your father into whatever land I will show to you. 2 And I will make you into a great nation, and I will bless you, and I will make your name great, and you will be blessed. 3 And I will bless those who bless you, and those who curse you I will curse, and in you all the tribes of the earth will be blessed.” Genesis 12:1–3 (LES2)

The passage essentially agrees, which is refreshing after being in the psalms and prophets for so long, where there is so much disagreement between the MT and LXX. This leads me to surmise that the disagreement there is deliberate. 

This passage is used by Zionists and Judaizers to promote Judaism and the nation state of Israel in modern times, but it actually pertains first of all to Abram, but, as will become apparent in the New Testament, more aptly to Christ, who is the focus of the entire Old Covenant (John 5:39). If we cannot find Christ in the Old Covenant, we are not understanding it as we should. 

Paul taught that Christ is Abraham’s promised “seed.” 

16 Now to Abraham and his Seed were the promises made. He does not say, “And to seeds,” as of many, but as of one, “And to your Seed,” who is Christ. Galatians 3:16 (NKJV)

4 So Abram went forth as the LORD had spoken to him; and Lot went with him. Now Abram was seventy-five years old when he departed from Haran. 5 Abram took Sarai his wife and Lot his nephew, and all their possessions which they had accumulated, and the persons which they had acquired in Haran, and they set out for the land of Canaan; thus they came to the land of Canaan. Genesis 12:4–5 (NASB95) 

4 And Abram went, just as the Lord told him, and Lot left with him. Abram was now seventy-five years old when he left Haran. 5 And Abram took Sarai, his wife, and Lot, son of his brother, and all their possessions that they acquired and every individual that they acquired, out of Haran. And they went out to go to the land of Canaan, and they came to the land of Canaan. Genesis 12:4–5 (LES2) 

6 Abram passed through the land as far as the site of Shechem, to the oak of Moreh. Now the Canaanite was then in the land. 7 The LORD appeared to Abram and said, “To your descendants I will give this land.” So he built an altar there to the LORD who had appeared to him. Genesis 12:6–7 (NASB95) 

6 And Abram traveled through its length to the place of Shechem at the high oak. But the Canaanites at that time were residing in the land. 7 And the Lord appeared to Abram and said to him, “I will give this land to your seed.” And Abram built an altar there to the Lord, who appeared to him. Genesis 12:6–7 (LES2) 

Here is where the more literal LXX is helpful. It translate “seed” in the singular; whereas, the LXX logically uses the plural “descendants.” Since we know that the “seed” is Christ, it follows that the land has been given to him. He alone is the rightful heir. The natural precedes the spiritual (1 Corinthians 15:46). The natural descendants of Abraham did inherit the land for a season, but because of their persistent idolatry and rebellion were cast out. As Jesus clearly taught, the kingdom of God has been given to another nation (Matthew 21:43), which Peter identified as the church (1 Peter 2:9) of the born again, both Jews and Gentiles. The New Covenant understanding of Abraham’s descendants (plural) is the church, as taught by Paul.

26 For you are all sons of God through faith in Christ Jesus. 27 For as many of you as were baptized into Christ have put on Christ. 28 There is neither Jew nor Greek, there is neither slave nor free, there is neither male nor female; for you are all one in Christ Jesus. 29 And if you are Christ’s, then you are Abraham’s seed, and heirs according to the promise. Galatians 3:26–29 (NKJV) 

Dispensationalism fundamentally errs by insisting that the Old Testament interprets the New, which results in its giving to the nation state of Israel what belongs to Christ alone, which is idolatry of a serious nature.

8 Then he proceeded from there to the mountain on the east of Bethel, and pitched his tent, with Bethel on the west and Ai on the east; and there he built an altar to the LORD and called upon the name of the LORD. 9 Abram journeyed on, continuing toward the Negev. Genesis 12:8–9 (NASB95) 

8 And he turned away from there to the mountain toward the east of Bethel and set up his tent there in Bethel toward the sea, and in Ai toward the east, and built there an altar to the Lord and invoked the name of the Lord. 9 And Abram departed and, as he traveled, he encamped in the wilderness. Genesis 12:8–9 (LES2)